Enscript Output

extractedLnx/linux-2.5.9/drivers/char/console.c_do_con_trol.c

static void do_con_trol(struct tty_struct *tty, unsigned int currcons, int c)
{
	/*
	 *  Control characters can be used in the _middle_
	 *  of an escape sequence.
	 */
	switch (c) {
	case 0:
		return;
	case 7:
		if (bell_duration)
			kd_mksound(bell_pitch, bell_duration);
		return;
	case 8:
		bs(currcons);
		return;
	case 9:
		pos -= (x << 1);
		while (x < video_num_columns - 1) {
			x++;
			if (tab_stop[x >> 5] & (1 << (x & 31)))
				break;
		}
		pos += (x << 1);
		return;
	case 10: case 11: case 12:
		lf(currcons);
		if (!is_kbd(lnm))
			return;
	case 13:
		cr(currcons);
		return;
	case 14:
		charset = 1;
		translate = set_translate(G1_charset,currcons);
		disp_ctrl = 1;
		return;
	case 15:
		charset = 0;
		translate = set_translate(G0_charset,currcons);
		disp_ctrl = 0;
		return;
	case 24: case 26:
		vc_state = ESnormal;
		return;
	case 27:
		vc_state = ESesc;
		return;
	case 127:
		del(currcons);
		return;
	case 128+27:
		vc_state = ESsquare;
		return;
	}
	switch(vc_state) {
	case ESesc:
		vc_state = ESnormal;
		switch (c) {
		case '[':
			vc_state = ESsquare;
			return;
		case ']':
			vc_state = ESnonstd;
			return;
		case '%':
			vc_state = ESpercent;
			return;
		case 'E':
			cr(currcons);
			lf(currcons);
			return;
		case 'M':
			ri(currcons);
			return;
		case 'D':
			lf(currcons);
			return;
		case 'H':
			tab_stop[x >> 5] |= (1 << (x & 31));
			return;
		case 'Z':
			respond_ID(tty);
			return;
		case '7':
			save_cur(currcons);
			return;
		case '8':
			restore_cur(currcons);
			return;
		case '(':
			vc_state = ESsetG0;
			return;
		case ')':
			vc_state = ESsetG1;
			return;
		case '#':
			vc_state = EShash;
			return;
		case 'c':
			reset_terminal(currcons,1);
			return;
		case '>':  /* Numeric keypad */
			clr_kbd(kbdapplic);
			return;
		case '=':  /* Appl. keypad */
			set_kbd(kbdapplic);
			return;
		}
		return;
	case ESnonstd:
		if (c=='P') {   /* palette escape sequence */
			for (npar=0; npar<NPAR; npar++)
				par[npar] = 0 ;
			npar = 0 ;
			vc_state = ESpalette;
			return;
		} else if (c=='R') {   /* reset palette */
			reset_palette(currcons);
			vc_state = ESnormal;
		} else
			vc_state = ESnormal;
		return;
	case ESpalette:
		if ( (c>='0'&&c<='9') || (c>='A'&&c<='F') || (c>='a'&&c<='f') ) {
			par[npar++] = (c>'9' ? (c&0xDF)-'A'+10 : c-'0') ;
			if (npar==7) {
				int i = par[0]*3, j = 1;
				palette[i] = 16*par[j++];
				palette[i++] += par[j++];
				palette[i] = 16*par[j++];
				palette[i++] += par[j++];
				palette[i] = 16*par[j++];
				palette[i] += par[j];
				set_palette(currcons);
				vc_state = ESnormal;
			}
		} else
			vc_state = ESnormal;
		return;
	case ESsquare:
		for(npar = 0 ; npar < NPAR ; npar++)
			par[npar] = 0;
		npar = 0;
		vc_state = ESgetpars;
		if (c == '[') { /* Function key */
			vc_state=ESfunckey;
			return;
		}
		ques = (c=='?');
		if (ques)
			return;
	case ESgetpars:
		if (c==';' && npar<NPAR-1) {
			npar++;
			return;
		} else if (c>='0' && c<='9') {
			par[npar] *= 10;
			par[npar] += c-'0';
			return;
		} else vc_state=ESgotpars;
	case ESgotpars:
		vc_state = ESnormal;
		switch(c) {
		case 'h':
			set_mode(currcons,1);
			return;
		case 'l':
			set_mode(currcons,0);
			return;
		case 'c':
			if (ques) {
				if (par[0])
					cursor_type = par[0] | (par[1]<<8) | (par[2]<<16);
				else
					cursor_type = CUR_DEFAULT;
				return;
			}
			break;
		case 'm':
			if (ques) {
				clear_selection();
				if (par[0])
					complement_mask = par[0]<<8 | par[1];
				else
					complement_mask = s_complement_mask;
				return;
			}
			break;
		case 'n':
			if (!ques) {
				if (par[0] == 5)
					status_report(tty);
				else if (par[0] == 6)
					cursor_report(currcons,tty);
			}
			return;
		}
		if (ques) {
			ques = 0;
			return;
		}
		switch(c) {
		case 'G': case '`':
			if (par[0]) par[0]--;
			gotoxy(currcons,par[0],y);
			return;
		case 'A':
			if (!par[0]) par[0]++;
			gotoxy(currcons,x,y-par[0]);
			return;
		case 'B': case 'e':
			if (!par[0]) par[0]++;
			gotoxy(currcons,x,y+par[0]);
			return;
		case 'C': case 'a':
			if (!par[0]) par[0]++;
			gotoxy(currcons,x+par[0],y);
			return;
		case 'D':
			if (!par[0]) par[0]++;
			gotoxy(currcons,x-par[0],y);
			return;
		case 'E':
			if (!par[0]) par[0]++;
			gotoxy(currcons,0,y+par[0]);
			return;
		case 'F':
			if (!par[0]) par[0]++;
			gotoxy(currcons,0,y-par[0]);
			return;
		case 'd':
			if (par[0]) par[0]--;
			gotoxay(currcons,x,par[0]);
			return;
		case 'H': case 'f':
			if (par[0]) par[0]--;
			if (par[1]) par[1]--;
			gotoxay(currcons,par[1],par[0]);
			return;
		case 'J':
			csi_J(currcons,par[0]);
			return;
		case 'K':
			csi_K(currcons,par[0]);
			return;
		case 'L':
			csi_L(currcons,par[0]);
			return;
		case 'M':
			csi_M(currcons,par[0]);
			return;
		case 'P':
			csi_P(currcons,par[0]);
			return;
		case 'c':
			if (!par[0])
				respond_ID(tty);
			return;
		case 'g':
			if (!par[0])
				tab_stop[x >> 5] &= ~(1 << (x & 31));
			else if (par[0] == 3) {
				tab_stop[0] =
					tab_stop[1] =
					tab_stop[2] =
					tab_stop[3] =
					tab_stop[4] = 0;
			}
			return;
		case 'm':
			csi_m(currcons);
			return;
		case 'q': /* DECLL - but only 3 leds */
			/* map 0,1,2,3 to 0,1,2,4 */
			if (par[0] < 4)
				setledstate(kbd_table + currcons,
					    (par[0] < 3) ? par[0] : 4);
			return;
		case 'r':
			if (!par[0])
				par[0]++;
			if (!par[1])
				par[1] = video_num_lines;
			/* Minimum allowed region is 2 lines */
			if (par[0] < par[1] &&
			    par[1] <= video_num_lines) {
				top=par[0]-1;
				bottom=par[1];
				gotoxay(currcons,0,0);
			}
			return;
		case 's':
			save_cur(currcons);
			return;
		case 'u':
			restore_cur(currcons);
			return;
		case 'X':
			csi_X(currcons, par[0]);
			return;
		case '@':
			csi_at(currcons,par[0]);
			return;
		case ']': /* setterm functions */
			setterm_command(currcons);
			return;
		}
		return;
	case ESpercent:
		vc_state = ESnormal;
		switch (c) {
		case '@':  /* defined in ISO 2022 */
			utf = 0;
			return;
		case 'G':  /* prelim official escape code */
		case '8':  /* retained for compatibility */
			utf = 1;
			return;
		}
		return;
	case ESfunckey:
		vc_state = ESnormal;
		return;
	case EShash:
		vc_state = ESnormal;
		if (c == '8') {
			/* DEC screen alignment test. kludge :-) */
			video_erase_char =
				(video_erase_char & 0xff00) | 'E';
			csi_J(currcons, 2);
			video_erase_char =
				(video_erase_char & 0xff00) | ' ';
			do_update_region(currcons, origin, screenbuf_size/2);
		}
		return;
	case ESsetG0:
		if (c == '0')
			G0_charset = GRAF_MAP;
		else if (c == 'B')
			G0_charset = LAT1_MAP;
		else if (c == 'U')
			G0_charset = IBMPC_MAP;
		else if (c == 'K')
			G0_charset = USER_MAP;
		if (charset == 0)
			translate = set_translate(G0_charset,currcons);
		vc_state = ESnormal;
		return;
	case ESsetG1:
		if (c == '0')
			G1_charset = GRAF_MAP;
		else if (c == 'B')
			G1_charset = LAT1_MAP;
		else if (c == 'U')
			G1_charset = IBMPC_MAP;
		else if (c == 'K')
			G1_charset = USER_MAP;
		if (charset == 1)
			translate = set_translate(G1_charset,currcons);
		vc_state = ESnormal;
		return;
	default:
		vc_state = ESnormal;
	}
}

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